By MICHAEL SCHWIRTZ

Published: August 4, 2009

Gunmen attacked a police convoy in the Russian republic of Chechnya on Sunday, killing at least five officers and wounding four others, investigators said Monday. Maryam Nalayeva, a spokeswoman for the Prosecutor General's Office in Chechnya, said the attackers used grenade launchers and automatic weapons. The attack occurred a week after a suicide bomber killed at least six people outside a theater in the capital, Grozny, underscoring the endurance of an insurgency that Russia's leaders say is all but defeated.